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                        阴影shadow
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                        选择器
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                        弹性盒子flex
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                        动画
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                        拓展内容
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                        JS
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                        if语句
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                        数据类型的转换
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                        数值类型Number
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                        字符串String
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                        数组Array
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                        数组的遍历
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                        filter过滤
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                        function函数
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                        定时器
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                        JS常用事件
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                        作用域-作用域链
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                        响应式Bootstrap
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                        ajax
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                        swiper
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                        变量提升和函数提升
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                        浏览器的渲染问题
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                        回流和重绘
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                        小事件
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                        创建对象的模式
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                        工厂模式
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                            <b>10.2.</b>
                        
                        构造函数
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                        原型模式和混合模式
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                        原型链
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                            <b>12.</b>
                        
                        this
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                        事件代理/事件委托
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                            <b>14.</b>
                        
                        同步&amp;异步任务
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                            <b>15.</b>
                        
                        防抖&amp;节流
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                            <b>16.</b>
                        
                        ES6
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                            <b>16.1.</b>
                        
                        let/const
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                            <b>16.2.</b>
                        
                        解构赋值
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                            <b>16.3.</b>
                        
                        Promise
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                            <b>16.4.</b>
                        
                        async&amp;await
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                            <b>16.5.</b>
                        
                        class
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                            <b>16.6.</b>
                        
                        module
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                            <b>16.7.</b>
                        
                        Set
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                            <b>16.8.</b>
                        
                        Map
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                            <b>17.</b>
                        
                        垃圾回收机制
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                            <b>18.</b>
                        
                        闭包
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                            <b>19.</b>
                        
                        Vue
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        <li class="chapter " data-level="19.1" data-path="md/19Vue/模板语法.html">
            
                
                    <a href="../../md/19Vue/模板语法.html">
                
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                            <b>19.1.</b>
                        
                        模板语法
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                            <b>19.2.</b>
                        
                        条件渲染
                    </a>
            
            
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                            <b>19.3.</b>
                        
                        列表渲染
                    </a>
            
            
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                            <b>19.4.</b>
                        
                        class&amp;style
                    </a>
            
            
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                    <a href="../../md/19Vue/v-model.html">
                
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                            <b>19.5.</b>
                        
                        v-model
                    </a>
            
            
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                            <b>19.6.</b>
                        
                        计算属性
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                            <b>19.7.</b>
                        
                        watch侦听
                    </a>
            
            
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                            <b>19.8.</b>
                        
                        过滤器
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                            <b>19.9.</b>
                        
                        局部&amp;全局组件
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                            <b>19.10.</b>
                        
                        通讯&amp;传递信息
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                            <b>19.11.</b>
                        
                        动态组件&amp;keepAlive
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                            <b>19.12.</b>
                        
                        插槽slot
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                            <b>19.13.</b>
                        
                        过渡和动画
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                            <b>19.14.</b>
                        
                        生命周期
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                        JS面试题
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<li>&#x9632;&#x6296;&#x7684;&#x672C;&#x8D28;&#x5C31;&#x662F;&#x7EF4;&#x62A4;&#x4E00;&#x4E2A;&#x5B9A;&#x65F6;&#x5668;&#x7684;&#x8D85;&#x65F6;&#x65F6;&#x95F4;&#xFF0C;&#x5982;&#x679C;&#x5728;&#x8D85;&#x65F6;&#x65F6;&#x95F4;&#x5185;&#x91CD;&#x65B0;&#x89E6;&#x53D1;&#xFF0C;&#x5219;&#x6E05;&#x9664;&#x5B9A;&#x65F6;&#x5668;&#x5E76;&#x91CD;&#x65B0;&#x6CE8;&#x518C;</li>
<li>&#x5B9E;&#x73B0;&#x83B7;&#x53D6;input&#x7684;value&#x503C;</li>
<li>&lt;<code>input</code> <code>type</code>=&quot;text&quot; <code>class</code>=&quot;ipt&quot;&gt;<pre><code>  function _ajax(method, url, callback) {
          let xhr = new XMLHttpRequest();
          xhr.open(method, url);
          xhr.addEventListener(&quot;readystatechange&quot;, function () {
            if (xhr.status == 200 &amp;&amp; xhr.readyState == 4) {
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        let timer;
        ipt.addEventListener(&quot;input&quot;, function () {
          console.log(&quot;timer&quot;, timer);
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          if (timer) {
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            clearTimeout(timer);
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          //&#x91CD;&#x65B0;&#x6CE8;&#x518C;&#x5B9A;&#x65F6;&#x4EFB;&#x52A1;&#xFF08;&#x91CD;&#x7F6E;&#x5012;&#x8BA1;&#x65F6;&#x65F6;&#x95F4;&#xFF09;
          timer = setTimeout(() =&gt; {
            //&#x6267;&#x884C;&#x4E1A;&#x52A1;&#x4EE3;&#x7801;
            console.log(this.value);
          }, 2000);
        });
</code></pre><h1 id="&#x8282;&#x6D41;">&#x8282;&#x6D41;</h1>
</li>
<li>&#x901A;&#x8FC7;&#x8282;&#x6D41;&#xFF0C;&#x63A7;&#x5236;&#x51FD;&#x6570;&#x5728;&#x4E00;&#x5B9A;&#x65F6;&#x95F4;&#x5185;&#x4EC5;&#x80FD;&#x89E6;&#x53D1;&#x4E00;&#x6B21;&#x6765;&#x51CF;&#x4F4E;&#x8C03;&#x7528;&#x9891;&#x7387;&#x7684;&#x76EE;&#x7684;&#xFF1B;</li>
<li>&#x6838;&#x5FC3;&#x601D;&#x60F3;&#xFF1A;&#x63A7;&#x5236;&#x4E00;&#x4E2A;&#x53D8;&#x91CF; true/false &#x7684;&#x5207;&#x6362;&#x95F4;&#x9694;<pre><code>function _ajax(method, url, callback) {
      let xhr = new XMLHttpRequest();
      xhr.open(method, url);
      xhr.addEventListener(&quot;readystatechange&quot;, function () {
        if (xhr.status == 200 &amp;&amp; xhr.readyState == 4) {
          callback(xhr.response);
        }
      });
      xhr.send();
    }
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    //&#x521D;&#x59CB;&#x5316;&#x4E00;&#x4E2A;&#x4F5C;&#x4E3A;&#x5F00;&#x5173;&#x7684;&#x53D8;&#x91CF;&#xFF0C;&#x7528;&#x6237;&#x8868;&#x793A;&#x662F;&#x5426;&#x5141;&#x8BB8;&#x6267;&#x884C;&#x51FD;&#x6570;&#xFF1B;
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    ipt.addEventListener(&quot;input&quot;, function () {
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        //&#x4E00;&#x65E6;&#x51FD;&#x6570;&#x6267;&#x884C;&#xFF0C;&#x5219;&#x7ACB;&#x5373;&#x5173;&#x95ED;&#x5F00;&#x5173;&#xFF0C;&#x7B49;&#x5F85;&#x540E;&#x7EED;&#x5B9A;&#x65F6;&#x5668;&#x6253;&#x5F00;&#xFF1B;
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        let url = &quot;https://netease.bluej.cn/search?keywords=&#x6D77;&#x9614;&#x5929;&#x7A7A;&quot;;
        _ajax(&quot;GET&quot;, url, function (data) {
          console.log(JSON.parse(data));
        });
        //&#x4F7F;&#x7528;&#x5B9A;&#x65F6;&#x5668;&#xFF0C;&#x63A7;&#x5236;&#x5728;&#x4E00;&#x5B9A;&#x65F6;&#x95F4;&#x540E;&#x6253;&#x5F00;canRun&#x5F00;&#x5173;
        setTimeout(function () {
          canRun = true;
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      }
    });
</code></pre></li>
</ul>
<h4 id="&#x89E6;&#x5E95;&#x52A0;&#x8F7D;">&#x89E6;&#x5E95;&#x52A0;&#x8F7D;</h4>
<pre><code>&lt;body&gt;
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    &lt;style&gt;
      * {
        list-style: none;
        margin: 0;
        padding: 0;
        box-sizing: border-box;
      }
      li {
        height: 300px;
        border: 5px solid black;
      }
    &lt;/style&gt;
    &lt;ul&gt;
      &lt;li&gt;&#x5546;&#x54C1;&lt;/li&gt;
      &lt;li&gt;&#x5546;&#x54C1;&lt;/li&gt;
      &lt;li&gt;&#x5546;&#x54C1;&lt;/li&gt;
      &lt;li&gt;&#x5546;&#x54C1;&lt;/li&gt;
      &lt;li&gt;&#x5546;&#x54C1;&lt;/li&gt;
      &lt;li&gt;&#x5546;&#x54C1;&lt;/li&gt;
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      /*
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        scrollTop + window.innerHeight = scrollHeight;
            &#x6EDA;&#x51FA;&#x9875;&#x9762;&#x9AD8;&#x5EA6; + &#x663E;&#x793A;&#x9875;&#x9762;&#x7684;&#x9AD8;&#x5EA6; = &#x603B;&#x9AD8;&#x5EA6;;

        &#x5F53;&#x524D;&#x6EDA;&#x52A8;&#x4F4D;&#x7F6E;&#x767E;&#x5206;&#x6BD4; = (scrollTop + window.innerHeight) / scrollHeight

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        ul.appendChild(df);
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        //&#x83B7;&#x53D6;&#x5F53;&#x524D;&#x9875;&#x9762;&#x7684;&#x6EDA;&#x52A8;&#x4F4D;&#x7F6E;
        let sTop =
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        let sHeight =
          document.documentElement.scrollHeight || document.body.scrollHeight;

        //&#x8BA1;&#x7B97;&#x767E;&#x5206;&#x6BD4; toFixed(x),&#x53D6;&#x5C0F;&#x6570;&#x70B9;&#x540E;&#x51E0;&#x4F4D;&#xFF0C;&#x8FD4;&#x56DE;&#x7684;&#x662F;&#x5B57;&#x7B26;&#x4E32;&#x7C7B;&#x578B;
        let progess = (wHeight + sTop) / sHeight;
        //&#x5224;&#x65AD;&#x6EDA;&#x52A8;&#x4F4D;&#x7F6E;&#x8D85;&#x8FC7; 90% &#x5E76;&#x4E14;canRun&#x4E3A;true&#xFF0C;&#x5219;&#x6267;&#x884C;
        if (progess.toFixed(1) &gt;= 0.9 &amp;&amp; onoff) {
          onoff = false;
          addItem();
          //&#x6CE8;&#x610F;&#x65F6;&#x95F4;&#x4E0D;&#x5B9C;&#x8FC7;&#x4E45;&#xFF0C;&#x4F46;&#x6EDA;&#x52A8;&#x6761;&#x6EDA;&#x81F3;100%&#x65F6;&#xFF0C;&#x518D;&#x7EE7;&#x7EED;&#x6EDA;&#xFF0C;&#x662F;&#x4E0D;&#x4F1A;&#x89E6;&#x53D1;scoll&#x65F6;&#x95F4;&#x7684;&#x3002;
          //&#x6240;&#x4EE5;&#x8981;&#x9632;&#x6B62;&#x7528;&#x6237;&#x5728; 500 &#x6BEB;&#x79D2;&#x5185;&#x6ED1;&#x5230;100%;
          setTimeout(function () {
            onoff = true;
          }, 500);
        }
        if (progess == 1) {
          addItem();
        }
      });
    &lt;/script&gt;
  &lt;/body&gt;
</code></pre>
                    
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